With the tip of a sharp knife, carve the features of a Halloween pumpkin on a flatbread, removing the excess to create eyes, nose and mouth.
Take another whole piadina to use as a base and stuff it with cooked ham and slices of emmental, placing the cheese at the eyes and mouth of the pumpkin.
Lay the carved piadina on top of the stuffed one and bake in a preheated oven at 180°C (350°F) for about 15 minutes, or until the cheese is completely melted and stringy when cut.